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O t.' 9, 19:24.v 1,508,275 sep R. M. DODD j HOSE CONNECTION Filed April 3 1924 eff f 7 i Patented Sept. 9, 1924.

UNITED STATES RILEY M'e DODD, OF TORRANCE, CALIFORNIA..

HOSE CONNECTION,

Applicationv filed April 3,

To all whom t may concern:

Be it known that I, RILEY M. Donn, a citizen of the United States, residing at Torrance, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Hose Connections; and I do hereby declare the follow-- ing to lbe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in couplings, and more particularly to devices of this kind through the medium of which hose and nozzles are connected together.

The invention has for its primary object the provision of a novel, simple and inexpensive means which, while capable of general application, shall be especially adapted to connect the hose and nozzle of a mud pump against the possibility of accidental disconnection.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accornpanyingr drawing, wherein:

Figure 1 is a sectional view taken on a plane extending longitudinally through a partly assembled nozzle and hose, the former being equipped with coupling means embodying my invention,

Figure 2 is a similar view on an enlarged scale, illustrating the initial step in the application of the hose to the nozzle,

Figure 3 is a similar view illustrating the final step in the application of the hose to the nozzle,

Figure 4 is a transverse sectional view taken on the plane indicated by the line 4 4 of Figure 3,

Figure 5 is a sectional view on an enlarged scale taken on a plane extending longitudinally through one of the slips and the adjacent part of the nozzle,

Figure 6 is a detail plan view of one of the slips, and

Figure 7 is a sectional view taken on the plane indicated 'by the line 7 7 of Figure 5.

Referring to the drawing by reference numerals, 1 designates a nozzle of the kind through the medium of which a hose is connected to the mud pump of an oil well drilling apparatus of the rotary type and to which the hose 2 is secured through the 1924. Serial No. 704,031,

medium of a coupling embodying my invention.

In accordance with my invention one or more clamps 3 of any well known construction, and slips 4 embodying a novel construction and mounted upon the nozzle 1 in a novel manner, are employed to secure the hose 2 tothe nozzle 1 against the possibility of Aaccidental disconnection therefrom. The nozzle 1 is provided with a plurality of equally spaced grooves 5 for the reception of the slips 4. The grooves 5 extend longitudinally-of the nozzle 1, they are of arcuate formati-on in cross section, and they are considerably longer than the slips 4. The bottom walls of the grooves 5 slope outwardly in the direction of the rear end of the nozzle 1. The slips 4, which are provided on their outer sides with forwardly facing teeth 6, are also of arcuate formation in cross section and have a snug sliding fit in the grooves 4. Cap screws 7 which pass through slots 8 formed in and extending longitudinally of the slips and which en gage the nozzle 1, are employed to prevent the radial displacement of the slips 4 and to limit their longitudinal movement rear-- wardly with respect to the nozzle 1. The slots 8 are countersunk or enlarged laterally at the outer sides of the slips 4to receive the heads of the cap screws 7.

Due to the outwardly and rearwardly sloping bottom walls of the grooves 5, the slips 4 move radially inward with respect to the nozzle 1 when slid forwardly thereon and radially outward with respect to the nozzle when slid rearwardly thereon. Be fore applying the hose 2 to the nozzle 1, the slips 4 are moved into the deepest portions of the grooves 4, as shown in Figure 1. After the hose 52 has been applied to the nozzle 1 over slips 4, as shown in Figure 2, the clamps 3 are secured in place under suiiicient pressure to cause the teeth 6 of the slips 4 to embed in the hose 2, and then the hose is moved rearwardly on the nozzle 1 into the position shown in Fig ure 3. During this movement of the hose 2, theslips 4 are moved into the shallower portions of the grooves 5, with the result that the hose 2 will be more firmly secured between the clamps 3 vand the slips 4. Owing thereto, and as the rearward movement of the slips 4 on the nozzle 1 is limited by the screws 7, the hose 2 cannot become accidentally disconnected from the nozzle 1.

Frein the oregoinfr' des'eiii'ptinQ- taken' in connection with the acoompanying dravving, it should be apparent that lmy improvedl coupling is simple and durable, that it'` ismovement of the hose o'ri` the' nozzle, suchl for instance as that caused by the rearward pressure exerted against its inner sfide" by the material being forced therethrough, would only result in a firmer connection beingestablished betiveen the hose ardvn'ozzle.

It should also be understood Athat the drawing is merely illustrative a'nfd doesA not pretend' to give exact p'rportionlsl Furthermore, .the Said (lrv'ingis illust tive of" a preferred construction, it"being`r m i p'eetat'ion that vario sf cha es"A and rn acariens may be 'made without departing fromthe spirit and se'ope-o'fry invention.

lVhile the coupling" is1illistfr'ated and described in connection ivitla particulartype of nozzle, it' is obviously capable` ofbeing used in connection Withlnozzles of any Char-4 acter and construction.l It is also obviously capable oil being'` used for the purposelof securing hose sections to couplings of that type'employed to unite the Sections of a tire, garden or' otherhose'. Furthermore, it should be understood that( l do notl Wish to limitl myself to the ,stated manner of applying ,the hose to the", nozzle, asfitv is obvious that to attain this end 'it' is not necessary to move the hose', clan'lpsl and clips from the .positionY shown in Figure 2 to that shown in Figure 3.

1. A hollow member provided With? a sloping surface, a toothed 'slip' slidably,` positined on saidsurface, and meansfor limiting themoveme'nt of the slip with respect to the member.

2. A. hollovvv member provided with a groove having an outwardly sloping bottom vvall; toothed slip slidably mounted in the groove in conta-ot with said bottom Wall, and means for limiting the movement of the slip with respect to the member. y

3. A hollow` member provided with a longitudinally extending groove having an outwardly sloping bottom Wall, a toothed slip' slidably mounted in said groove and provided vvith a longitudinally extending slet, and a retainingeleni'ent engaging the slip' and member and passing through said slot.

li A holloiv member provided ivithla hose'v retaining means mounted thereon for simultaneous longitudinal and radial movements with respect thereto and means adapted t'o clamp the" hose" to said 'lrst named means.

5. A liolloiv member provided with sloping surfacesextending longitudinally thereH of, hose retaining' slips slidably mounted onrv said surfaces, and means adapted to elam'p'the hose to said slip.

, A holloi'vv member provided with sloping" surfaces extending longitudinally'thereof, toothed slips slidably mounted on said surfates', means limiting the movement ot the slips, and means adapted to clamp a hose about said slips.

- In testimony whereof I ai'rix my signature in presence ot two Witnesses.

l RILEY M, DODD litnesseS:

llinnn flonoaiv, Tnn'onoizn G. DAvis 

